| Committee on Solar and Space Physics | Academic & Science |
| Community School Student Partnerships | Academic & Science |
| Council of Scientific Society Presidents | Academic & Science |
| College of Social Sciences and Philosophy | Academic & Science |
| Colorado Society of School Psychologists | Academic & Science |
| Certified Sport Security Professionals | Business |
| Certified SonicWall Security Professional | Business |
| Certified Sport Security Professional | Business |
| Community Service Scholarship Program | Community |
| Community Service Scholars Program | Community |
| Community Safety and Security Program | Community |
| Clear Springs Scuba Park's | Community |
| Clear Spring Scuba Park | Community |
| Cherry Springs State Park | Community |
| Credential Security Support Provider | Computing |
| Cascading Style Sheets and Positioning | Computing |
| Cyber Security Service Provider | Computing |
| Chip Sized SAW (Surface Acoustic Wave) Package | Computing |
| Continuing Studies and Special Programs | General |
| Chappaqua Summer Scholarship Program | General |
| Crap Shoot Star Party | General |
| Circuits Systems and Signal Processing | General |
| Corrections System Support Program | General |
| California Super Stock Pulling | General |
| Competitive Skills Scholarship Program | General |
| Citizen Soldier Support Program | General |
| Customer Specific Standard Product | General |
| Center for the Study of Social Policy | General |
| Cherry Springs Star Party | General |
| Customer Self Service Portal | General |
| Cigarette Smoking Strictly Prohibited | Governmental |
| Civil Service Superannuation Plan | Governmental |
| Center for Simplified Strategic Planning | Governmental |
| Center for the Study of Scottish Philosophy | Regional |
